Adjustable shelving system



FIG. 1 is a perspective view of an adjustable shelving system, showingmy new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the drawings form no part of the claimeddesign.

CLAIM The ornamental design for an adjustable shelving system, as shown and described. 